"In the last year, there have been more than 10 occasions," Madory said. "They have varied in duration. This was probably the longest since May of last year and that time it was down for about eight hours. That's just simply looking at how diverse their connections are to the outside world. Cuba is considered severe as well. It goes through one provider to the outside world. Syria has two connections to the outside world."

According to both Renesys and Massachusetts-based Arbor Networks, Internet access in the war-torn country started to waver on Wednesday and went down earlier today.